Viola Davis stars as a U.S. president who has to save other heads of state from a terror plot in the new trailer for action-thriller 'G20.'

The official synopsis reads: “When the G20 summit comes under siege, U.S. President Danielle Sutton (Davis) becomes the number one target. After evading capture by the attackers, she must outsmart the enemy to protect her family, defend her country, and safeguard world leaders in this action-packed thrill ride.”